[arch-general] Improve the filesystem package

[Yamakaky]

Hi

I see some possible improvements to the filesystem package to use some 
of the recent improvements to systemd. I don't know if they are already 
planned.

All the empty directories and the links could be replaced by a 
tmpfiles.d file, like /usr/lib/tmpfiles.d/archlinux.conf.

/etc/{group,gshadow,passwd,shadow} could be removed as the base users 
and groups are already created by the upstream sysusers.d files. The 
arch-specific ones (like bin or daemon) could be created by 
/usr/lib/sysusers.d/archlinux.conf.

The others /etc/ files could be moved to /usr/share/etc/ and copied as 
needed to /etc using tmpfiles.d files.

A filesystem.install file could launch systemd-tmpfiles and 
systemd-sysusers to update the local configuration when the package is 
updated.

In the end, filesystem would contain only tmpfiles.d and sysusers.d 
files + /usr/share/etc.

I can make a draft of this package if you want.


More infos : http://0pointer.de/blog/projects/stateless.html